Sectional pile shell



auch 20, 1945. A. c. TITCOMB ET AL SECTIONAL PILE SHELL Filed Nov. `18 1945 2 sheets-sheet 1 .w am T rb M Omn T 0 non. emoif. V..IT nTfC IC.. TD rK 8P VDO @AMM 9 m w .n

March 20, 1945. A, C. TiTcoMB 15T/ALv SECTIQNAL PILE SHELL 2 Sheets-Sheet 2 Filed Nov. 18, 1945 o@ l1 v III:

l, respeetive drive rings. thereby` distributingV force of the blowfoitliefpileharnmer. slmultan*ei- Patented Mar.2o,1945,

UNITED STATES N PMF-Nr.1

e 2,371,784* f 1 l SEC-Trotter. PILE. sentir'. Albert C. 'riteomb,io1ston, aodfMor'k': drohen,-

g Belmont, Mass;, assignoxs'toPNieuw*Eiiglain f Foundation Compsny, Inc, Bosnien,Mass.,A i

corpotatonofiMassaehusetts n l Application Ncvelrilierf18,1943,` N.` .l

nmltaneously driving all the sections by adriv-j ing core having. suitably spacedsliouldere'd' mein@ hers Aadapted; tri-engage the. .uppervfacespfflt e. e

ouslyto.theseveralsections` y l .t In `some cases.` the drive rings have beengfsee;

i object of` which shellf sectionLandiy drivinf. fic'rl` `on the upper end. of.` tlenext lower" section Ato llflllent seepage tlroughtlie JoiritLV .11' uen-constructions" are, mainly, effeouvetneem rit of. s'iippge of the joint connection islnec riljlir'r'1i`t`dl.. A

The present, comprises an improve` rieneupon our lor"` oo struotion,the priieoipeiiI is. to.. provide ileans for. permit-` orig greater-extern oif"`1"ciig'i'ord'io'eririovemennpe` tween`v` adjacent shell sections and for providing more effective reansicir' preventing. seepage through the y"joints connecting .tlie` several se'- f A. further oojeetzoflt `overiuon toprovioe a secti'oiial'T` pile-f shellconst'lfl'iction` in which the;

. moons connecting;adjacent`superimposed. seocouplings and. drive rings. of any suitableyrnat'e'f rief; WG111: vplesitrgimbrgneted papef# Dit l w'o'od`, o`r` other rliaterals which may cured totheuppen ends of,` the respective sections., l

while iniot'hersthe d-rive rings have been `so` coni-A. nected to..the: lowers ends. nfl` the. respective. sec tions. as. to pull.. the sectionsldownwardly by tene sileibrce. l 4 lt.- has. been found.. in. actual. practice .that it is. di11`e11ll,` it not., impossible'r so to;` construct andi assemble tl'e shelll` sections f and. the `cil-rive. rings.. which. are connected. toK them. that. the. distances.: betweenethe. drivel ringslofA the SeveraLsectiQns will) be; precisely thesame ast-ha distance between the. shouldersof. the 4drivingore andi any diiieve' ence in. the distances.- between twod'rive 11i-rigs and th at.. betweenl the. czmrespond'ng'T `shoulders` oi? the. drive cere. will. cause. a. separation ori` ruptura of.' the. sliell.sections.whichl will. permitrlseepageoi; water. end/or: of ne. soiliintothe interionoi the` pile shell which will@ adversely-"afliectltlue homo@- l geneity off.` the filling' orl willrk cause. such, weakens:

collapseuponi withdravvaleot` the: driving core.` l Cnernesrrs.cfa` avoidingr. such-.defects-in section-w al' shell" constructions.-v isL disclosedo iniourr prior.' Raitent. No. 2,288,516.' gran-ted'. June: 39l 14342;: in wliiclLeach .pile section llas adrive ning-1 secured.M to, its` upper. end..` provided with. a coupling? meme ber and...complernentany;A coupling means ``rigid withm the lower end. `of the. sha1-1. section 4terminen abayonet joint, but so constnuctedesfto permit li'rriitedf relative longitudinal vmovement o-ifthe--V members of.` the.. bayonet .l j oint.` between-1 adjacent In suchi constructions 1f ttc,l ng .y incense-arie: i

ually provided between the lower end of each fie df wiktl'r.V another' shell'siection.

. e steered.. formed, rolled,`.mou`1`dei or shapedand united as' hereinafter shown; ses described'. g

More particularly4 th"object` of the inver` is, to provide va pileishell section `havinf-I at. i s" upper end La `ldrive ri having `slid'ably and. rotstablyA mounted o it ,lower` end. ja coupling.. ringto provideajsl nt therebetween with corri"lerrientaycouplingfrneans on" .said drive.4

ring `emr seid jeoooline "ring-'j and .which cani be permanently Klfis'sernloledi. theshellzsectionlc `n tosupport the .weight of.`r slfiell siectionsl assembled. l

above or below` it, out eootedzto; be rotated' by; an; applied turningjfore, tocause interlocking.

engagement o'fth'e coupling means of the cour... V

pling ring and" thatoi Athe drivering of anotlie'rins description- 'andi the:T accompanying-if driwiiigs e IllustrativeR ari@l fpreferrext ernbtdirrientsE off the` invention I arei-shownrliii'the accompanying draw# ings as applied to a pile shell having a plurality et` lo. -feotoryj and. ee toet. f

`I rliliirly.equipped'shell seche invention is. to` .provide` soiree lowerA portieri.

' joint therebetween;

of superimposed cylindrical sections of progressively increasing diameter from the lowermost tp'- the uppermost, but it will be understood that the invention may be embodied in sectional pile shells of any desired shape or contour, of constant di-g ameter, uniformly tapering sections, shells having horizontal or spiralr corrugations, etc.

In the drawings; .f

Fig. 1 isayertical longitudinal sectional Viewof a pile shell embodying the preferred form of the invention and illustrating in elevation a drvy,

' ,upon the drive ring of the next lower shell section,A

ing core simultaneously engaging the drive rings A of the several sections and the drive shoe Ycon- 1f nected to the lower end of the lowermostsection.

the lower end of the adjacent sections being con nected to the driving ring of the -nextjlowersecf tion and/or to the drive shoe by a coupling ring@4 having a sliding connectiontherewith 4and suit-fl able packing for preventing` seepage =through the Fig. 2 is a horizontal sectional view on line 2'-2\Fig.l, illustrating one form of bayonet joint connection between the drive shoe andthe couipling ring and a slip joint connection between the coupling ring'and the lowerend of a shell section of the lowermost shellsection and also illustrative of similar bayonetand slip joint connectionsb'etween'gthe drive rings of the successive rsections and the lower'end of the next superimposed sectionj Fig. 3 is a detail side elevation of the construction` illustrated vin Fig. 2;y g

Fig. 4 is a fragmentary vertical sectional view of a modiiied bayonet joint andslip joint connection betweenthedrive ring .on the uppencnd of one ksection and ythelower end ofthe next super-v imposed section, illustrating also a portion .of the. drive core having ashoulder'engaging .the drive' rmgzf.. I'. Fig.5 is a similarfragmentary view illustrating another formgof bayonetjoint and'slip .joint connection; 1 i

Fig. 6 is a similar .fragmentary view of a modiired .formof bayonet joint and slip joint connection;

Fig,v 7 .is'a` similar fragmentary view of a modi-` iied form of bayonet joint and slip joint connection of the lcharacter illustrated in Fig. l;

Fig. 8 is a similar fragmentary view of another form of bayonet joint/,and slip joint connection showing avmodied .form of packing between the n couplingring and th lower end portion of the next superimposed section in'which the coupling ring surrounds and hasv a bayonet joint connection with the vertical wall of the `vdrive rlngand also illustrates a drive ring having a horizontal lower ground-engaging face instead 'of an upwardly inclined lower face; Y Fig. 9 is a similar fragmentary view illustrating another embodiment ofthe invention in which thecoupling ring is connected to the .drive ring in a manner similar to that illustrated in Fig. 8; and,.-V4 ,Y A-

Fig. 10' is' a similar fragmentary view illustrating a screw threaded connection between `the coupling-ring'land the drive ring.' f if;-

v Theinvention comprises broadlypa tubular pile formed of superimposed shell sections adapted to bedriven into the ground to receive a.'suitable lillingv in which each shell section and .also the drive rings-coupling rings, and drive shoesare of material capable of .withstandingthe press'ureof the'V soil in whiehit is embedded andhaving 'a drive ring xedly connected toits upper end and vextending over and beyond its circumference provided with a lower soil-penetrating face and an upper face to be engaged by a shouldered member of a driving core and having an upwardly extending wall provided with a member of an interlocking joint connection, said shell section having rotatably and slidably mounted upon its lower end portion a coupling ring providedywith: an interlocking joint connectioncomplementary to that of the drive ring adapted to be rotated into interlocking engagement with a like coupling member and thereby providing a slip joint connection begint/.een adjacent pile sections which will avoid the application to the respective shell sections of .y -tensileor compressive strains which will tend to "ruptur'eyor distort the walls of the respective shell sections. j y l,

l The shell sections may be of any suitable matesuch as sheet steel, plastic, impregnated woodply wood,etc., capable of being stamped,

formed, rolled, mouldedf'or otherwise shaped to any desired contour and may vbe provided with horizontal,v spiral or vertical corrugations.

The shell sections may be of uniform diameter uniformly taperedor otherwise formed in accordance with the character of the soilor of the v,use

to whichv the `pile is to be subjected.

The lower. en d of the pile shell may be provided with a conical drivingip'oint or preferably with a lat drive shoe connected to the lower end of the lowest pile section'by a slip joint connection as herein described.

A preferred embodiment ofthe invention which is illustrated inFigs.' 1, 2,` and 3, of the drawings,

comprises av yseries of superi rnposedk thin shell sections I each of which has xedly secured to itsv upperend a drivering2 and which desirably has flxedly secured to its lower end a sleeve 3 upon which is rotatably and slidably mounted a coupling ring 4, the drive ring andvco-upling ring being provided with complementary interlocking joint connecting members adapted when the coupling ringat the lower end of one section is interjengaged wth'the complementary locking member of thefdrive ringof the next lowest section to form a tightjoint therebetween, suitable gaskets preferably being interposed between the members of the sliding connection between the coupling ring and the sleeve, and preferably also vbetween the coupling ring Aand the drive ring to prevent seepage of water, etc., into the .interior pile shell.`

As illustrated inv Figs. 1,-3 each drivering 2 is provided with aV downwardly extending ange 5 which ts tightly withintheshell section'l and is iixedly secured thereto in the manner above described. u The drive'ring :is provided at or adjacent its periphery with an upwardly extending wall 6 provided with suitably spaced members of an interlocking joint connection which, as illustrated vmore particularly in Figs. 2 and '3, comprises inwardly extending vertical wall sections or ribs 'I unitedby inwardly extending wall sections or ribs 8; the lower facesI 9 of which are suitably inclined to the horizontal. 4

' The sleeve 3 which is secured to the lower end of each shell section Ihas azi/inward olset .IIJv andcylindrical portion II vof smaller diameter.

providedfat its lower end with a U I2 having a vertical wall I3 spaced from and parallel to the outer'surface ofthe sleeve II. The coupling ring 4- has a portion I 4 which slidably ritsv upon the vertical section I3 of the U-shaped flange and is provided at its upper end with a reversely bent U-shaped section I 5 which -shaped flange is com- 4 asm-rse i plemmitaryftoxthatcnuwsneinsectiomanmsitd-i pcsethhetweenthecparalliportions of thefiiangesi` off thensleeve` and thefscoupiingzring tnerebyrproi--f vidiitgna. watertight joint.. 'The-:lowen ends. of'zthe portion I4 of1 thecouplingringai is jcprovidedvwithi suitably spam-:1dsoutwardly,` eXten/dingsrilmtlltomsl nlennemi-airy..4 ton-then inwardiy.: extendingtvofil the dri-vering; andxhaving. inciinediuppersurfaoes ribs il; lower enctiofi lthe `coupling .ringfbengv also *providedl `with a; downwzatrtis.r extending an. nulan .1porti'orr,` lI 8; adapted tovvengagef gasket ISzfwhich isiseatedvupon aa snouldenronthe ring; adiacenti to.: the verticali wall'r thereozfA i .l

By reason of the construction' above descxbed: thoutwardlyoiset `l k ci the cmlilingi mawbeintroduced verticallyrinto thespacesll {wetend-li!4 inwardlyrextending ,wall's'l-'of the .dink/"ee y ring-,and rotationxof thercouplingfringwiiimausez the;inclined;faces:ofthxaribsJ l 11: thereoffitorengagef the;` complementary inclined-x faceswofzr theafnbs'f 8i on the :drive` ringe; and'. force; thez lower'Y endiof 'the` coupling ring tightly against the gasket I9, ther-'c+' by; clamping it 1mmly; uponf the: shoudenvoi the drive ring,r thusi sealing. thewjointw connection: against-tseepage of water. into'thezinterim*` of the` pile;` 1

t `In theconstrueuon niustaoiin mg. iitheshiif sections. areshown. as cylindrical? shells: of-` suce cessivelyP decreasing, diameter, but it =wil1 ber un cl.crstood` that'A the: shell sectionsI mam bef off-z unisy form` diameter? horizontally "orf spirailyY corrugated, ,orV of f uniformly taperedfconstructiom `Ilceflower?end1 of -thelowermost shell@ issinrfv ilarlyconnectedtto-thedrive sheet 2t the. periphery ofi` which `is provided 1 with i an upwardly extending4 wet-11u22 yprovided with an:` interlocking; jointicons: nectiom similar tol that of `the `respecti-veedriveY rings: t l

Suitable means are provided `for.'driving,the

` shell Asections indepencil-entlyl w'lfiich: asfillusinated` herein comprises; ai driving core? 23 havingf suitd ably` spacedfshculders: 24 adapted' Vsirnultaneotlsly1` to-.e;ngagel the"v drivinggsurfaces of the: respective drive rngss. The" lower,- end-ofv the drive-core is providedv witht a` horizontalH surfacei adaptedl; to engage the 7confiplernentarv .flat Lupper surface oLthe-,drive shoeZL l l Y By reason-vof. the constructioni abover described t the-drive` shoe anriceachzof the drivemings ofthei several sections areY simultaneously.A driven-3 'om` blows v of,l the:hammer4 rnpingingE upon-f` the upper." end of the drive core, andA anyrslightvariation` in.1engthofthegshell sections is'compfensatedi-byl thegslpjoint connections'respectively between;

the: drive shoe 2i and `the lowermost, Shelli` tm which it-,is securedV andy byjtherslip jointtcorinecsv -o tions between the adjacent shell sections; while the t gaskets I9` prevent `seepage through4 ther interlocking joint. connection andithefgaskets" l-Gepres ventfseepagethrough;the relativelymovable sur--` faces ofthe slipjoi-ntoonnectiom.

respective couplingoings;and` sleevesfis such provide suicient friction to support the-Weigifit`l` of, other shell sections-Winch .may be superimposed v t upon .or depending,` from the shell sections.`

The construction above described slsuch that each unit` maybe completely manufactured and assembled.A at thefactory and adapted `wl'ien in' the eld. torbe coupled to` other sections and a' suitablev drive shoeto form a' completepile shell" adapted to be driven into nie-grower Atincdinedfprefenedliormuct coupiingrf .is t Illustrained in 41m wiichieacmshell Sectio has nttingtwithimand securedttc its lowen end or` tioma sleeve 2lilhavinfg'ran` inwardly oiisetfcylins d-rdcalportioni 21 the. lowerend'off: which pro-- videdwith a licrizontahlaterallyextending flange 281;; Ascoupline nngfslidabay'and rotatably nts-s upon the inwardlyonset-section. andiis provided? Withx an recess i containingz at gasket: on packing., 30), f The` lower :end: portion.5 oil the coupling ring has;` ann outwardlyoffset cylindrical extension 3l the: lowexffendlpcrtiom oi which'. isxprovided iwithgsuit-t' ably spacediozlset coupling` members: onricsy 312i A complementary' to. the inwamdly: onset: ribs 8.1 of: 1bn

ermostsheltsection `il In this? constructiong-. as.;

in` thatdisclosedinFigs; i 1-3; the" coupling. ring'f 29::isslftrmly lockedlto'the drive ring of tlsie: next" 20! lower section and@ the gasket iwhichis inter--I posed? between the lower: end: of. the: coupling-2 andA the. drive. ring; ,isi rmly clamped l inv place; The: couplingring 29' is': prevented.l from detachment from;the sleeve- 2'6 byftheziriorizontally extending f flange 28 upon: thelower; end: of thezsleeve and* the movement of the coupling; ring; upon: the

sleevedslimitedbytheyflange' andthe upper Wall oftheinwardlyoffsetportion;tt` l rms-ff is@ .prenderli atsiliconefk i1f1terva1`s-fA with'. outs p wardly onset s'ections'i at similar tof uccise` unisi-v alrite ring-i 2li on theq next lowermnst' section;

Resuitabl'e gasket or packing 3c# is interposed between the adjacent walls-"off the` shell* and eouming rin-glissrandsmaytse here* inipi'scevby sunk aolemeans rsuoli l as as ringl 391` 'xedly securedv to` tHe coupling fringe In this construction fasin that shownl inVFigsf; 1-3 the-lower end ofi" the con# oline'y rin'gfisadptedfto enga-ge `the gasket l Stand" firmly? clainpit upon itsiseat: on' the drvef rinus 4l which is rotatably and slidably'monted'upon l the'lower end: portion ofi tlie shell l section I and providediwitli'a recess containing a packing orV Wennen? ses# Afefoffthe cnupung which engages me,

molines minerv fac-s of. titeuf-we tung. 'Ins con;h l t piling rilrghasI an'inneriverticalwall 4T egtemiing(v upvsniirdly`iwithin'l the shell in `sliding)engage-V shell l hasfsecuredf'to it an annularfinner band 411i n'fthis construction the ccuplingiring; is; of*

'deformed Uli-shape having:-

cylndricaliportion tions' or"ribstadaptectto engageAconmlcmentary;` sl'icul'riers'` extending inwardlyi from' the. upper ttf off nie shouldered portions 43' extend dp-wno wardly'azndare providedwitli inwardly offset por;l tions 45-whi`ch are integra-1 with the annular in` which tightly ts the inner surface of theishell I.

Another embodiment of the invention i`s illus trated-inv Fig. 7 in which the lower end of the shell section I has secured to its outer surface a sleeve 49 the lower end of which hasan inwith outwardly oiset spaced sections 53 adapted' to interlock with similarly spaced inwardly projecting ribs 54 on the upper end of thel wall 6- of the drive ring 2. The coupling 52 has an inwardly and downwardly extending portion 55 complementary to the inclined upper surface of the drive'ring and is provided with an inner vertical wall 56 the upper end of which has an inverted U-shaped ange 51 which slidably ts between the inner surface of the sleeve 49 and the periphery of the complementary U-shaped nange of the sleeve 49. A suitable packing 58 is housed in the space between the interengaging U-shaped flanges of the sleeve and the coupling ring and a suitable gasket 59 is enclosed between the complementary inclined surfaces 'of the cou'- pling ring and drive ring, thereby insuring exclusion of seepage into the interior of the pile.-

'Another embodiment of the invention is illus,- trated in Fig. 8. In this construction the lower portion of theshell section I has xedly secured to it a cylindrical sleeve 66 provided with a plurality of inwardly offset ribs 6I which may bel of annular or spiral form andv provided with-suitable recesses to receive packing rings 62 or a spiral packing. The lower end of the sleeve 60 is provided with a horizontal outwardly extending ange 63.

The coupling ring comprises a cylindrical sec,- tion 64 which is rotatably and slidably mounted upon the sleeve 60 and provided with an oiset cylindrical portion 65Vwhich fits the periphery of the flange 63. The lower end of the coupling ring is provided with spaced inwardly offsetl sections 66 complementary to similar outwardly olset sections 6'I of a vertical wall 68 of the drive ring 69 of another shell section, thereby forming a bayonet joint connection of the character heretofore described. In this construction the wall 68 is spaced rfrom the periphery of the drive ringand the drive ring provided with a concentric outer peripheral wall 76, portions of which are adapted to engage the outer face of the coupling ring when the bayonet joint connection is in inter- 'Another modied, construction embodying the invention is illustrated in Fig. 9v in which the shell section I has fitting within andY fixedly secured to it a downwardly extending cylindrical sleeve 12, rthe lower end of which isv provided with wardly extending walls or ribs v'II having inclinedv upper faces adapted to engage complementary 4odset sections 'I8 of a bayonet joint coupling member upon the upperend of a verticalwall 19 extending upwardly from the drive ring a short distance from the periphery thereof. Thel drive ring 2 is provided with an outer or peripheral wall 88 of Aless height providing therebetween a seat ,for a gasket 8| and the lower edge of the coupling ring is so constructed as rrnly to clamp the gasket upon its seat onthe drive ring when the bayonet joint members are moved into locking posi-- tion.

Another embodiment of the invention is illustrated in Fig. 10 in whichv the lower end of the shell section I is provided with an outer cylindrical band 82 forming in eiect a flange at the lower end of the shell section. A coupling ring ,'83 of general cylindrical form is rotatably and slidably mounted upon the cylindrical band 82'1 and has secured to the inner face of its upper end a similar cylindrical band 84 which slidably and rotatl ably engages the outer cylindrical surface of the l shell section I. The coupling ring83 is provided locked engagement. 'I'he lower portion of the 'coupling-ring 65' is adapted to seat upon a suitable shoulder 'II between the adjacent walls 68 and I0 of the drive ring. c

In the construction illustrated in Fig. 8 the drive ring at the upper end of each section is shown as extending horizontally outwardly from the shell section to the upper end of which vit is xedly secured and it will'be understood ,that drive rings for theseveral pile sections may be so constructed as to havehorizontal outwardly extending ground-engaging surfacesy or inclined ground-engaging surfaces in this construction or in any of the otherconstructions illustrated herein, the form of the drive ring in any case being optional so long as positively interengaging joint members are provided for the drive ring and coupling ring and the coupling ring is slidably and rotatably mounted upon the lower end of the next superimposed shell section. l

intermediate of its width with a spirally ois'et section or rib 85 and at its lower end with a cylindrically oiset section 86 the lower end of which is adapted to engage a suitable gasket 8'I and clampthe same rmly against a shoulder upon the drive ring. l

In this construction the drive ring 2 has an outer vertical peripheral wall 88 which is provided with an inwardly offset spiral section or rib 89 complementary to the outwradly offset section or rib 85 of the coupling ring. The upper end of the peripheral wall 88 of the drive ring has an inwardly extending flange 90 the under surface of which-is spirally inclined to engage the upper surface of the outwardly offset member or rib and together with the inclined surface SI of the spiral section or rib llprovides interengaging screw thread connection between the coupling and the upwardly extending wall of the drive ring. A suitablepacking 92 is interposed between the cylindrical portion of the coupling ring and the shell section i and is held in place in any suitable manner as by a ring 93 which is secured to the coupling-ring.

In the manufacture of thefshell sections each of the drive rings is formed by usual shaping machines to provide the downwardly extendingV lower end of each shell section for the purposeof providing a watertight joint wherethe pile isvv to be. sunkin water-saturated soil and similar gaskets are also shown in some of the figures member or `members of a bayonet joint' connection, a cylindrical sleeve fitting within and fixedly secured to the lower end ofl said shell provided below said end with a cylindrical `inwardly offset portion the lower end of which has an Outwardly extending inverted U-shaped fiange, a coupling ring having a complementary inverted U-shaped portionrotatably andslidably engaging and fitting the-surface of the inwardly offset portion of said sleeve, and the flange thereof, to provide a slip joint therebetween, a packing filling the space between the overlapping walls of said coupling ring and flange, and complementary bayonet-joint members on said coupling ring and flange adapted when the bayonet joint members of the coupling ring and those of the next lower section ofthe driving ring are interlockedto secure said sections rmlytogether subject to relative longitudinal movement between thecoupling ring and the pile section uponk which it is mounted. 8. Apile "shell, adapted to be driven into the ground to receive asuitable filling, comprisinga plurality of axially superimposed tubular shell sections each of which has mounted upon, its upper enda drive ring Vhaving coupling means, a coupling ring slidably and rotatably mounted on its lower end portion having coupling means complementary tothat of said drive ring, and Dackingmeans between said coupling :ring and the portion of the shell section upon which it is mounted, the frictional engagement'of the 'coupling ring and sleeve being sufficient to support the weight of the shell sections assembled thereon but to permitrotation by an applied turning force to move the coupling means thereof into locking engagement with the complementary coupling means on a like drive ring from another shellsection.` A y 1- Y 9. As an articlefof manufacture a tubular pile shell section having iixedly securedtoits upper end a rigid drive ring extending over and beyond the circumference thereof and provided with a member of an interlocking joint connectiom'acoupling ring slidably and rotatably mounted on the lower end portion of saidsection provided .amuse f i yshell section having xedly securedto its upper end a rigid drive ringextending over and beyond the circumference thereof and having an outer upwardly extending wall provided with an inclined coupling member and having a seat for a gasket adjacent to the base of said wall, a sleeve iixedlysecured to the lower end portion of said Y shell section having at its lowerendv a laterally vextending flange, a coupling ring', slidably and rotatably fitting said sleeve abovesaid flange land having an inclined coupling member complementary to that of said drive ring adapted upon interlocking engagement with that of a like drive ring to clamp the gasket firmly upon its seatv and the drive ring thereon.

, 12. As an article of manufacture a tubular pile shellsection having xedly secured to its upper end a rigid drive ring extending over and beyond 'the circumference thereof and having at oradjacent its periphery an upwardly extending wall provided with members of a bayonet joint connection, a sleeve fixedl-yY secured to thelower end of said shell section having a cylindrical inwardly oset portion provided at its lower end with an outwardly extending flange, a couplingy ring slidably and rotatably mounted upon andtightly tting'said inwardly offset portion having at its lower end members of a bayonet joint connection complementary to those of the drive ring, and a packing between the coupling ring and the offset portion of the sleeve upon which it is mounted. V

13. As an article of manufacture a tubular pile shell section having flxedly secured to its upper end a rigiddrive ring extending over and beyond the circumference thereof and having a peripheral upwardly extending wall provided with inwardly offset inclined coupling members and having a seat for a gasket within and adjacent 40 to the base of said wall, a sleeve tting and xwith a member of an interlocking joint connec-- i tion complementary, to that of said drive ring adapted upon rotative movement of said coupling ring fixedly to engage alike locking member of the drive lring of'anoth'er .pi1e`section, and means for limiting the .sliding movement of the coupling ring.

` 10. As an article of manufacture a tubular pile shell section having fixedly secured to its upperv end a rigid drive ring extending over and be-` yond the circumference thereof having a gasketsupporting shoulder and provided with an inclined member of an interlocking joint connec-v tion, a coupling ring slidably and rotatably mounted on the lower end portion of said section provided with an inclined member ofan interlocking joint .connection complementary to that of said drive ring vadapted upon rotative movement of said coupling ring xedly to engage a like locking member of the drive ring of another pile section and to clamp said gasket firmly upon the shoulder thereof, and means for limiting the -sliding movement of the 1coupling ring`A v n 11; As an articlegofmanufacture a tubular pile vedly secured to the lower endfof said shell section having at its lowerend a laterally and upwardly extending U-shaped flange, a coupling ring having a complementary inverted U-shaped iiange rotatably and slidably engaging said sleeve and the flange thereof to provide a slip joint therebetween and havingoutwardly offset inclined coupling members complementary to those of said drive ring. Y

14. As anarticle of manufacture a tubular pile shell section having iixedly secured to its upper end a rigid drive ring extending over and yond the circumference thereof and having a low outer upwardly extending circumferential wall and an inner Iupwardly extending wall of greater height provided with outwardly offset inclined coupling members of an inclined bayonet joint and having between said walls a gasketreceiving channel, a sleevefitting and xedly secured to the lower end of said shell section having at its lower end an outwardly extending flange, a coupling ring mounted on said sleeve with a packing therebetween and having anoutwardly offset portion fitting the offset porticnof the inner wall of said drive ring andprovided with inwardly extending bayonet joint members complementary to those of said wall vand having at its lower end an extension adapted to engage the gasket in the channel of said ring.

- ALBERT C. TITCOMB'. MARK D. CRONAN.` 

